Dr. Karen Ann Davis, DO
- Medicare services, 2018
- 883
- Part D claims, 2024
- 239
- Industry payments
- $1,337
- Affiliated sites
- 2
- Medical groups
- 4
- Practice address
- 900 E Hamilton Ave, Campbell, CA 95008
- Practice phone
- Call (469) 466-7007
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Signify Health
Campbell, California
Find Dr. Davis' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Karen Ann Davis is a general practice physician in Campbell, California
Dr. Davis practices at Signify Health in Campbell, California.
Dr. Davis' NPI, 1285769158, was assigned on February 22, 2007. Dr. Davis holds North Carolina license 2019-02545.
- NPI
- 1285769158NPI Registry (opens in a new tab)
- NPI enumeration date
- February 22, 2007
- NPI status
- Active
- Practice phone
- (469) 466-7007
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Karen Ann Davis practices at Signify Health in Campbell, California
Dr. Davis' primary practice is Signify Health, at 900 E Hamilton Ave, Campbell, CA 95008 in Santa Clara County. The practice phone is (469) 466-7007.
- Signify Health900 E Hamilton Ave, Campbell, CA 95008 · Santa Clara CountyPhone(469) 466-7007
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karen Ann Davis is affiliated with 3 sites of care and 4 medical groups
Dr. Davis' primary practice is Signify Health in Campbell, California. The medical group on file is Signify Health. Dmand AI also links Dr. Davis to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Karen Ann Davis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Davis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Signify Health | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karen Ann Davis is one of 1,526 general practice physicians in California
General practice is Dr. Davis' primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dmand AI has Dr. Davis' licenses on file in 2 states: North Carolina and Colorado.
Specialties and state licenses
- General practice, North CarolinaPrimary
- Family medicine, Colorado
General practice physicians near Dr. Davis
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Karen Ann Davis billed Medicare for 883 services in 2018
CMS data shows 883 Medicare services from Dr. Davis across 17 procedure codes in 2018. Medicare paid $35,313 for them. Every service was in an office.
Dr. Davis' Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 4032018: 46916%
- Lab and pathology
- 2017: 1012018: 12726%
- Drugs given in the office
- 2017: 02018: 82
- Other services
- 2017: 432018: 7881%
- Surgery
- 2017: 212018: 65210%
- Tests and treatments
- 2017: 152018: 51240%
- Imaging
- 2017: 142018: 1121%
Dr. Davis compared with the California median for general practice physicians, 2018
- Dr. Davis
- California median
- Medicare services
- 883vs 2623.4 times
- Part D claims
- 59vs 19269% below
Medians across 1,114 general practice physicians in California with Dmand AI profiles that report each measure.
Dr. Davis' most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Davis and other general practice physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen Ann Davis' patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Davis' median patient age at 76, with 52% women.
Dr. Davis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women52%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Karen Ann Davis wrote 239 Medicare Part D claims in 2024
In 2024, Dr. Davis wrote 239 Medicare Part D claims for 80 patients. 93% of them were for generic drugs. CMS names the drug for 59 of them, across 4 drugs with 11 or more claims each, at $1,583 in total drug cost. In 2022, CMS named 148 claims across 3 drugs.
Dr. Davis' Part D claims by kind of drug, 2024
- Generic223 claims93%
- Brand-name16 claims7%
Dr. Davis' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Davis' Part D claims, 2024
- Opioids7%17 of 239 claims
- Antibiotics5%11 of 239 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 1482024: 5960%
Drugs named by CMS: 4 in 2024, 3 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Karen Ann Davis received $1,337 in industry payments from 2016 to 2025
CMS Open Payments shows 18 general payments to Dr. Davis from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 62% of the total. Uswm, LLC paid the most, $506.
General payments to Dr. Davis by program year, 2016 to 2025
General payments to Dr. Davis by kind, 2016 to 2025
- Food and beverage$83162%
- Gifts$50638%
Companies that paid Dr. Davis the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Karen Ann Davis's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Karen Ann Davis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Karen Ann Davis' NPI number?
Dr. Karen Ann Davis' NPI number is 1285769158. It was assigned on February 22, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen Ann Davis?
Dr. Karen Ann Davis is a general practice physician in Campbell, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Karen Ann Davis practice?
Dr. Davis practices at 900 E Hamilton Ave, Campbell, CA 95008. Dr. Davis' primary practice is Signify Health in Campbell, California. Dmand AI also links Dr. Davis to 3 medical groups and 2 group practices and clinics.
What is Dr. Karen Ann Davis' office phone number?
The practice phone on file for Dr. Davis is (469) 466-7007.
What is Dr. Karen Ann Davis' medical license number?
Dr. Davis holds North Carolina license 2019-02545, one of the licenses on file in 2 states.
Which states has Dr. Karen Ann Davis been licensed in?
Dmand AI has state licenses on file for Dr. Davis in North Carolina and Colorado.
What medical group is Dr. Karen Ann Davis part of?
Dr. Davis is linked to Signify Health. Dmand AI links Dr. Davis to 3 more medical groups.
Does Dr. Karen Ann Davis accept Medicare?
Yes. CMS data shows Dr. Davis billed Medicare for 883 services in 2018.
What services does Dr. Karen Ann Davis bill to Medicare?
In 2018, Dr. Davis' most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and injected or infused drug (J3301).
What drugs does Dr. Karen Ann Davis prescribe most?
In 2024 Medicare Part D data, Dr. Davis' most prescribed drugs by claims were Zolpidem Tartrate, Metformin HCl and Fluticasone-Salmeterol.
Has Dr. Karen Ann Davis received payments from drug or device companies?
CMS Open Payments shows $1,337 in general payments to Dr. Davis from 12 companies from 2016 to 2025. The largest total came from Uswm, LLC.
How long has Dr. Karen Ann Davis been practicing?
Dr. Davis' NPI was assigned in 2007.
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